Method of operating male and female molds having stripper plates



March 9,1926. y 1,576,202

w. MCLAREN l METHOD OF' OPERATING MALE AND FEMALE MOLDS HAVING STRIPPER PLATES Filed June 23, 1924 ATTORNEY -25 cones from the male Patented Mar. 9, 1926.

UNITED STATES PATENT oF ,1,576,202 FICE.

WALTER MGLAREN, 0F DAYTON, OHIO, ASSIGNOR TO THE McIiAREN' PRODUCTS CO.,

OF DAYTON, OHIO, A CORPORATION OF OHIO.

METHOD oF OPERATING MALE AND rEiaALE'MoLDs HAVING s'rmrrEca PLATES. l

' Application' median@ as,

To all whom t may concern.' Be it known that I, IVALTER MCLAREN, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio. have invented a new and Improved Method of Operating Male and Female Molds Having Stripper Plates, of which the/following is a specification.

My invention has for its particular object" 'I to provide an improved method of extractJ ing ice cream cones and other forms of cup pastry from ltheir baking molds. Cup pastry is usually made by a combinedmolding and baking process employing male and female molds. These molds are either of the solid female typeor the split or divided type, the latter being `used principally in the making of cake orsugar sweetened cones, and the -former in the making of paste cones, that is, cones having but little, if any, sugar.

Hei'etofore numerous methods of extracting the cones from their molds have been used, among which is the use of a stripper plate- 'for effecting the detachment of the or female parts of the molds or both. l

My present invention particularly has for vits object to provQa/an extraction method for use in connection with' such molds as employ stripper plates.

In order to obtain a clear understanding of my method of operation reference is made tothe accompanying drawing, in which:

Figure 1 isa'J vertical longitudinal section of a male and female four unit mold of a type that may be `employed in carryinglout my invention. Y Figure 2 is a cross section on the line 2 2 of Figure l with the core, mold and stripper 40 plate in the osition they assume when'assembled,` andp the moldsA are free from a charge of batter. v V

Figure 3 is 'a section similar to Figure 2 indicating the position of the vparts during 145 the baking stage after the mold has been charged with batter andthe core pressed down to its nal position.

Figure 4 indicates the first .step in carry- Aing-out my present extraction method. v igure 5 indicates the second step in carlying out my method where split molds are em oyed. l

` iguregGf'indicates the final step of the e method where the stripper has functioned to release the" cone from the male element,

1924. Serial No. 721,857.

lustrated in the drawing. "2 represents the 60 core bar which carries the cores or male elements 3, and 4 indicates the stripper plate which lits snugly, but with a sliding lit, the necks 5 of the cores 3 and has up and down movement on such necks. The stripper plate is supported from the core bar byl pins or bolts 6 and springs 7 are interposed between the strippe-r plate 4 and the core bar, contnuously tending to lower thestripper plate I* l from the core bar, adjustable nuts 8 being 70 provided to determine the maximum movement of the stripper plate under fthe tension of the springs 7. The stripper plate 4 may be caused to go through its cycle of movement in any desired Way. Where the invention is employed in automatic machinery, however, the movements of the stripper-plate 4 will be governed by cam track action but since that forms no part of my present' invention (the method being independent of any particular apparatus employed) I have rnot illustrated any mechanism for operating the stripper 4in the manner state In carrying outI my method of extracting the cones from the lbaking molds where the invention is used in connection with molds ofthe split type, the molds are charged with batter in any of the ways now known and the core is pressed to its finally seated position to cause the batter to fill the mold cavity and the excess to be pressed out through the top of the mold cavity. The excess batter encountering the stripper plate 4 will force it up against the tension of the spring7 and flow out to form a head sheet: 9 on the cone 10.

It is well known to those skilled inv this art that the 'resence of sugar in ice cream y cones causes an increased adherence of the material to the mold surfaces with which 1t 1s incontact. This is commonly known as sticking. In order to free the cones properly from the molds ofl the type with which my invention is employed, I rst ef- 105 yfeet a raising of the stripper'plateA fromA he' vposition .indicated in Figures 1 and 3 sutliciently to break the adherence between 4the strip er late and the head sheet 9 of I the cone see igure 4)'. Inextopen the fe- 110 male molds, as lshown in Figure 5, thereby freeing the outer surface of the conel() from the surfaces of the female molds leaving the cone adhering to the core 3. I next lower the stripper plate into contact with the head sheet and further to cause it to force the cone longitudinally off the core and permit it to drop, as shown in Figure 6.

I-Vhere the invention is carried out with a non-separable or solid female mold the surface configurations of the female mold cavity are so designed that the draft will be longitudinal or along the axial line of the cavity so that the cone can be pulled up out of the female cavity Without mechanical interlocking. lVhen the invention is employed in connection with molds of the solid type I lift the core and stripper plate from the position shown in Figure 3 up out of the female mold entirely while maintaining the position of the stripper plate with respect to the core bar. I next lift the stripper plate up out of contact with the head sheet 9 to release it from the head sheet and then force it downwardly again into contact with the head sheet, andrfurther, to cause it to stri the cone from the core; or the stripper p ate may be raised t0 break the contact with the head sheet before the core and cone are withdrawn from the female cavity. I prefer the former operation, however, because it increases the tendency of the cone to stick to the core rather than to the female mold and ensures the lifting out of the cone from the female mold cavity.

The essential feature of my invention lies in first detaching the stripper plate from sticking engagement with the baked product before using the stripper plate to strip the baked product from the core.

Vhile my invention has particularly for its object the extraction of the cone from the mold, it also comprehends the operation of the stripper plate on the excess batter or overflow by which the excess batter or overflow is evenly spread and its overflow resists suiiiciently to form properly the mouth or edge of the cone.

From the foregoing description, taken in connection with the accompanying drawing, it is thought the complete construction, operation and advantages of my invention will be clear to those skilled in the art.

lVhat I claim is: i

l. The method of extracting pastry products from male and female molds having stripper plates on the male element, vsaid method including the steps of detaching the stripper plate from the baked product be-v fore using the stripper plate to detach the baked product from the male element.

2. The method of extracting pastry products from male and female baking molds using s :ripper plates on the cores, said method, comprising the detachment of the stripper plate from the adhering surface of the baked product, detaching the baked product from the female mold and thereafter moving the stripper plate into pressure engagement with the baked article to force it off the core.

3. The method of operating male and female baking molds having stripper plates on the male element adapted to rest on the female element when the male element is'in position on the same, said method comprising the raising of the stripper plate to permit excess batter to How out of the molding cavity over the top surface of the mold between it and t-he stripper plate, maintaining the stripper plate in pressure contacty with the overflow, effecting a separation of the baked product from the fem-ale mold while it remains on the male element, and

breaking the adherence between the stripper plate and the baked product and subsequently using the stripper plate to force' the baked product OH the male element.

VALTER MGLAREN. 

